Centrifugal governor.



UNITED srrirnsurrnnr orrron.

VlNCENT `r. Allllfll, OF DAYTON, OlllO, ASSIGNOR TO DAYTON ELECTRICALMANUFACTURING OO., A. OORPORATlON Ol" OHIO.

CENTRIFUGAL GOVERNOR.

Specification of Letters Patent.

Patented Oct. 22, 1907.

Application filed April20,190'7. Serial No. 369,207.

To all 'wLof/n yit muy concern:

Be it known thaiJ .1, VINCENT G. APPLE, a citizen of the United States,residing at Dayton, in the county of Montgomery and Slate of Ohio, haveinvented certain new and useful lnrprovements in Centrifugal Governors,of which the following is a specification.

hly invention relates to improvements in centrifugal governors, and hasfor its general object to provide an improved governor adapted forassociation with a variable speed or high speed prime mover, to act totransmit to an element lo be driven a practically uniform, constant andrelatively low speed of rotation.

One of the particular objects of my invention is to provide a governorol this type which is self-contained,

l5 wherein the rotating parts run wholly upon bearings constituting partof the self-contained structure.

A further object of my invention is to provide a construction whereinall of `the bearing parts are inclosed and may run in grease or otherlubricant.

Still another object of my invention is to provide a governor whereinthe adjustment of the parts to effect increase or decrease in the speedof the driven element maybe effected Wh ilo the governor is inoperation, and further, without nnttorially changing the frictional re-2 5 sistanee offered by the parts in rotation.

A yet further object of my invention is to provide a construction whichis simple, efficient, readily taken apart and assembled. and capable ofinstant adjustment to vary the spccd imparted to the driven element.

Other and furthcr objects of my invention will beA come apparent tothose skilled in the art from the following description taken inconjunction with the acco mpanying drawings; wherein,

Figure I. is a cenlral vertical, longitudinal section lhrough. agovernor embodying my invention; Fig. 2 is a transverse section on line2--2 of Fig. l., and, Fig. 3 is a cross section on lino 3-3 of Fig. 1.

Throughout said several views like mlmcrals of reforence refer always tolike parts. In the drawing 5 indicates a casing, which maybe a castingof suitable shape, providing a central chamber (i, wherein thc grwcrnorwcighls may move. The front end wall 7, of the casing, is recessedsuitably to receive a ball bearing structuri- 8, whereof 9 is an outerannulus, sealed in a recess in the casing wall,l 9/ is an inner annulusaffording conn-al shaft passage, and 10-l0 arc the lmlls, interposedbetween said annuli, and positioned by suitable retainers 10, suchstructure representing a typical ball bearing of the self-containedtype, suitable for thc purpose to be described. l prefer further that apacking ll should be arranged bctween the inner annulus or race 9, andthe end wall of the casing, which is apertured only sufficiently for thereception of a shaft. v

12 indicates the thickened rear wall of the easlng 55 internallyscrew-threaded as at 13 to receive an adjustin g head lll, such headbeing provided with a screw threaded portion 15 and an enlarged handleportion 16 surrounding a central aperture 17, for the reception of acasing of a iexible shaft, such as that indicated in dotted lines at ain the drawing, to which shaft easing the adjustingl head may be securedagainst rotation by set screws 18, sunk in threaded apertures 19 Whichmay also serve as Spanner holes. In the adjusting head 14 is mounted arear ball bearing 20 comprising an outer 65 annulus 21, an inner annulus21, and interposed balls 22, and retainers 22, the ball bearingstructure being preferably of af type which is self-supporting, as inthe case of the ball bearing 8 at the front end of the structure.

Through the alining annuli 9/ and 21/, of the front and rear bearings,passes a shaft 23, which extends beyondthe front end of the casing 5,and has secured to its projecting end a pulley 24;, illustrated as abeveled friction pulley.

While the pulley may be secured to the shaft in any approved manner, lillustrate an advantageous construction to this end, involving a pin 25extending transversely through the shaft and projecting on both sidesthereof, the pulley 24 having in its hub slots 26 80 `which embrace theprojecting ends of the pins 25 and hold the pulley against rotation, thepulley being held against slipping axially from engagement with the pin25 by means of a screw 26 taking axially into the shaft through thefront face of the pulley.

30 indicates a collar secured to the shaft 23 by pin 31 said collarbeing flattened on opposite sides and having pivoted thereto governorweights 32-32 of semi-annular shape in cross section, and provided withcurved arms 33, adapted to constitute eccentric or c'am 90 levers, ashereinafter described, pivoted on pins 34 taking into the flat surfacesof the collar 30, heretofore described. Between the front end of thecollar 30 and the member 9 of the front ball bearing, is interposed aplate 35, preferably presenting aflat surface of consid erable extenttoward the collar 30 and' centrally Ithickened to present a bearingsurface at its forward The shaft 23 is provided with a telescopingmember, with respect to which it may move axially only, and to this endthe rear end of said shaft is made tubular, the recess 37 therein beingprovided with internal feathers 3S, to interfit in grooves 40 in atelescoping shaft section 39 towhich is suitably secured a coupling headLil, adapted to receive and be suitably fastened to a .flexible shaft orother suitable part to be driven, substantially as indicated in dottedlines at b.

In use my governor is adapted for the transmission to shaft element 23,and the other connected elements to be driven, substantially uniformspeed of rotation, precisely determinable by adjustment of thegovernor', from a high speed or variable speed time mover', wherewiththe pulley 24 is arranged for coaction. It will be seen that if pulley2li be pressed against the prime mover, such as a fly-wheel of thevariable speed gas engine, so that said pulley is rotated, the rotationis imparted tothe shaft 23, through the telescoping shaft section 39 tothe other elements to be driven connected therewith, for instance, theflexible power shaft b, indicated in dotted lines. Rotation of the shaft23 carrying with it the governor weights 32, causes said governorweights to fly outward so that their cam-shaped carrying arms 33 topress against the bearing plate 35 to exert a tendency to move the shaft23 rearwardly, against the tension of spring 36. When the speed ofrotation of the shaft 23 and the governor proper is such that the spring36 is unable to resist the thrust caused by the action of the governorarms 33 upon plate 35, the shaft 23 is moved bodily rearward withdrawingpulley 24 from contact with the prime mover, as shown, until the speedof rotation is so reduced that spring 36 may overcome the thrustoccasioned by the centrifugal action of the governor and push the shaftwith its pulley 24 forward for effective connection with the prime moveragain. In practice it will be well understood that with a givenadjustment of the spring 36, a practically constant speed of the shaft23 and its connected elements to be driven is secured, as this generalprinciple of governing is well known.

It will be seen from the construction disclosed that the tension ofspring 36 may be adjusted by rotation of the adjusting head 14, whichscrews said head 14 and the ball bearing carried thereby toward or fromthe governor'. It will fui'ther be noted that the spring 36 at the rearend and the wear plate 35 at the front end, both bear against members ofanti-friction bearing rotatable with the shaft, so that increase anddecrease of the tension of spring 36 results in no perceptible change inthe frictional loss of power in the governor. Further it will be seenthat the division of the telescoping shaft section admits of slidingmovement of the shaft member 23 without disturbance of the relation ofthe connection of the shaft to the extraneous, such as the flexibleshaft illustrated in dotted lines at b.

While I have herein described in some detail a specific embodiment of myinvention, which I have found in actual practice to be advantageous, itwill be apparent to those skilled in the art that numerous modificationsin the specific embodiment may be made without departure from the spiritand scope, and I do l not desire, therefore, to be understood aslimiting my j invention in its broader aspect to the specific devicesshown and d escrib ed,

Having thus described my invention, what I claim and desire to secure byLetters Patent, of the United States, is:

l. ln a governing appliance, a frame or casing, a shaft supportedthereby for axial movement, separated axiallystationary parts mountedfor rotation with the shaft, a weight carried b v the shaft, arrangedwhen moved by eentrifugal action to act upon one axially-stationary partto move the shaft axially, and a spring opposing the action of saidweight bearing on the other axially-stationary part.

2. In a governing appliance, arframe or casing, a shaft, opposing endbearings for the shaft, comprising parts r0- iatable with the shaft,parts positioned by the casing, and interposed anti-friction parts, anda centrifugal governor carried by said shaft between said bearings,comprisingr parts arranged to exert a cam action upon a part of one ot'said bearings rotatable with the shaft, and a spring opposing said cainaction, exerting its thrust upon that member of the opposite bearingrotatable with the shaft.

2'. ln a governing appliance, a'containing casing pro viding oppositeend bearings, one of which is adjustable axially of the casing, a shaftmounted in said bearings, a governor carried by said shaft between saidbearings, and comprising" an adjustable spring, coacting with one ofsaid bearings for adjustment as to tension by .axial ad justment of saidbearing.

l. In a governing appliance, a frame or casing, a shaft supportedthereby for axial movement, separated parts positioned axially by theframe and rotatable with the shaft, one of said par i being adjustablein the frame with respect to the other, and a governor on the shaftbetween said parts, comprising a weight arranged when lnoved bycmitrifugal action to exert a cam action on one said part to move theshaft axially, and a spring opposing the action of said weight bearingon the other said part.

in a governing appliance, a, casing providing a central chamber.anti-friction bearings closing opposite ends of said chamber, one ofsaid bearings being axially adjustable, a main shaft member extendingthrough the casing finding bearing at opposite ends in saidanti-friction bearings, an extension shaft member teleseoping with thesaid main shaft, and a governor carried by the main shaft arranged ioimpart axial movements to said main shaft.

(i. [n a governor appliance, a casing providing a central chamber,anti-friction bearings at opposite ends, each comprising a central partfor rotation with the shaft, a main shaft engaging said rotatablebearingparts, and a governor carried by the said shaft between said hearings,comprising weights arranged to exert a cam action upon the rotatablepart of one bearing to axially move the shaft, and a spring arranged toexert its thrust against the rotatable part of the opposite bearing, forresisting the action of ihc governor weights, and means accessible l'romthe exterior of the casing for axially adjusting the last said bearing.

T. ln a governor appliance, a casing provided at its front end with abearing, and at its rear end with screwthreaded apertures. an adjustinghead closing said end of the aperture provided with a central bearing, ashaft passing through said front and rear bearings, a governor carw riedby the shaft between said bearings and arranged when in rotation to e.vrt a tendency to move said shaft rearward axially of the casing, saidgovernor comprising a spring for re sting such movement of the shaft, atits rca r end abutting against a part carried by and adjustable withsaid adjusting head.

S. ln a governor' of the character described, a casing provided withanti-friction bearings at opposite ends. an adjusting head carrying therear bearing, having an ened central aperture in rear of said bearing, amain section mounted in said bearings, a pulley on the front end of saidshaft, an extension shaft section telescoping therein and rotatabletherewith, and a governor comprising semi-annular weights 32 and camarms 33,

mounted for rotation with the main shaft section, to tend to move Suidsha't rearwardly under the influence of centri'lngnl action, andcomprisingl also o spring 3G interposed between n part conneclod withthe main shaft section and said adjusting head.

.0. .ln :1 governing appliance, a. frame, a main shaft mem* ber axinllymovable therein, o governor connected with said shaft member to nxiallymove it, and an extension shaft member telescopintr with said main shaftmember and longitudinally movable independently of the governor.

l0. In a governing appliance, a traine, n main shaft member axiallymovable therein, a friction gear device carried by said shaft member, agovernor connected with said shaft member for axially moving,` it, anaxially-stationary transmission part, and :1n extensible connectionbetween the last said port and said shaft-member uniting them forrotation.

In testimony whereof I hereunto set Iny hand in the presence ot' twowitnesses.

VINCENT G. APPLE.

ln the presence 0f- S. NI. IneK, N. E. SNYDER.

